MVC :: How To Keep A Hidden Field Populated On Validation
Jan 31, 2011
I have a form in MVC3 that includes a check box to copy data if it is the same as a previous form. If the checkbox is checked, it populates the text box with the content from the hidden field. Here's a sample to illustrate what I'm doing:
[Code]....
When the box is checked, it calls FillInfo(), which uses DHTML to fill the TextBox called "ThisInfo" with the value of the hidden field "DefaultInfo."
Here's the problem: if the form fails validation (e.g. "ThisInfo" is a required field and is left blank), the hidden "DefaultInfo" box is getting cleared out -- which I DON'T want it to do. As a result, when the checkbox is clicked, it is copying empty data into the "ThisInfo" field.
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Mar 23, 2011
I have a custom user control which contains a asp hiddenfield object. The value of this hidden field is being set using javascript and I have verified that the value is being set properly. When a postback occurs the new value is not being saved and I cannot access it in my code.
I believe the problem is because the user control is not saved in viewstate and therefore the hidden field value is not saved accross postback. How can I make the hidden field save its value? I tried accessing it from the early page cycles and still no luck.
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Jan 7, 2010
I have Gridview like this:
<asp:GridView ID="gvPartsSearchResult" runat ="server" CssClass="MRJ_TextGrid">
<Columns>
<asp:TemplateField HeaderText="Select">
<ItemTemplate>
<asp:RadioButton
ID="rdButton"
runat="server"
AutoPostBack ="true"
onclick="javascript:CheckOtherIsCheckedByGVIDMore()"/>
<asp:HiddenField
ID="hdnFileExtension"
runat="server"
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</asp:TemplateField>
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</asp:GridView>
I want to read the hidden field value when the user clicks on the radio button.
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Feb 17, 2011
I'm writing a small web application in c# and i'm running into a small problem.
Basically, on page_load() my backend MySQL db is queried to bring back the user data, and that is then inserted into the textbox controls as below:
[Code]....
Now the problem occurs when the RequiredFieldValidator kicks in. In my form processing function, I call Page.IsValid(), it fails and displays the required message next to the required fields.
I was wondering if there is a workaround for this, or a better way to go about what i'm trying to do.
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Apr 28, 2010
I'm populating a DropDownList using JS on the client and validating with a RequiredFieldValidator.This works fine on the client but the Page.IsValid consistently comes back false on the server.Is this because the selected value wasn't in the DropDownList when it was first served to the page?What's the easiest way around this? (I need to leave server validation turned on)
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May 10, 2010
I'm using the below code to populate a label inside my insert template with the logged in users' name...
<asp:Label runat="server" Text="<%# Membership.GetUser().UserName %>" id="Label1">
</asp:Label>
Now that my label gets the UserName how can I also bind this label to the field "name" in my database when the user submits?
[Code]....
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May 12, 2010
the thing is that I have a form with a textbox and a button and a hidden field, now what i want to do is to write something in the textbox ,pass it to the hidden field and then access that thing written in the hidden field in the controller . how can i do that?
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Jan 23, 2011
What is the difference when using ::
Hidden field vs View state??
when to use each one ??
which one more secure?? and which is better than in performance?
what are the alternatives?
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Mar 4, 2010
how am I be able to assign a value to my hidden field control? I have this web service that returns member's ID and name (e.g. 0001-John dela Vega). In order for me to search for a member, I'm using an autocomplete extender, now, if in case that I found the member I'd like to assign its member id to a hidden field. I ask this because I'd like to change the way my web service return data so instead of displaying the member's id and name at the same, I'll just show its member name.
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Nov 23, 2010
i have a javascript function written like this
[code].....
Now this is working fine but , lets say i have 10 textboxes, if i change the value one the first textbox to be the same as the second textbox , it means it is a duplicate, now the problem here is that the value of the hidden field does not get updated immidiately , you have to click twice to get the real value.
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Mar 14, 2010
wnat to set the HIDDEB FIELD VALUE THRU JS. But I am gettin the error,can anyboy help me out!
Code:
<input id="HiddenField1" type="hidden" value="" runat="server" />
Code:
var _textbox1= document.getElementById('<%= textbox1.ClientID %>');
document.getElementById('HiddenField1').value = _textbox1.value;
alert(document.getElementById('HiddenField1').value);
ERROR(IMAGE ATTACHED)
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Mar 12, 2010
I have a hiddenfield, which I want to save the scroll position of asp.panel scrollbar during postback, and when during postback this value is called back to set the scroll position.
Using javascript I can grab the value from the scrollbar, and assign it to the hidden field, but when I post the page back the value has gone.
Here is my code snippet:
<script type="text/javascript" language="javascript">
function SetScroll(val) {
[code].....Am I missing something? How do I keep the value during post back?
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Sep 18, 2010
you save data into a dynamic hidden field ,which is created dynamically during the handling of some postback event.what is the best way to retrieve it from this field upon a postback, (besides searching the request for the key of this hidden field and then retrieving the corresponding value as in the code below)?
protected void Button2_Click(object sender, EventArgs e)
{
bool found = false;
for (int i=0; i<this.Request.Form.Keys.Count; i++)
[code].....
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Feb 4, 2010
I have a problem
<script language="javascript" type="text/javascript">
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Feb 3, 2011
I inherited some JavaScript that I was told to integrate into our ASP.NET site. I thought this would be straightforward but it's turning out to be a bit of a challenge.
The code looks something like this:
<SELECT id="Question1" name="Question" onchange="updateQuestion();">
<OPTION value="notChosen">--Please Select One--</OPTION>
<OPTION value="in">India</OPTION>
<OPTION value="de">Germany</OPTION>
<OPTION value="fr">France</OPTION>
<OPTION value="us">United States</OPTION>
<OPTION value="ch">Switzerland</OPTION>
</SELECT>
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var sQuestion = document.getElementById('<%=sQuestion.ClientID%>');
sQuestion.Value = "";
var questions = document.getElementsByName('Question');
for (question in questions) {
if (questions[question].value != null)
sQuestion.Value += questions[question].value + ",";
}
alert(sQuestion.Value);
}
As you can see, that's looking to update an ASP.NET control:
<asp:HiddenField ID="sQuestion" runat="server" value="" />
This appears to all work, however when I goto the server side on the form submit I see that sQuestion.Value is still = "".
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Jul 29, 2010
I have a component that determines a value on a postback event.
protected void Button_Click(object s, EventArgs e)
{
HiddenField.Value = 5;
}
There's more involved in the value of course, but HiddenField is an asp:HiddenField control with runat=server set. I have in my javascript:
var id = $("#<%= HiddenField.ClientID %>").val();
The code in the javascript is set to be run only after the postback has occured (a different client click event) for the purpose of passing the hidden field value via QueryString to another URL (since i can't do a response redirect on postbacks and the client wants it in a different page anyway).
I tried adding:
ScriptManager.RegisterHiddenField(HiddenField, "Value", string.Empty);
To a !Page.IsPostback section of code, but the ID is still not set when the javascript is run.
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Jan 26, 2010
im trying this format:
$("#<%= hfWidth.UniqueID %>").val($("#drag").attr("offsetWidth"));
to fill the hidden field with client-side values
but when I do postback, the values doesn't seem to be saved.
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Mar 30, 2011
I have stored a string value in a hidden field of a page. How to access it from a different webpage?
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Aug 13, 2010
i have a
<asp:HiddenField runat="server" ID="ListTwoHiddenField" />
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Jan 30, 2010
can we store viewstate other than in hidden field in asp.net
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Jan 27, 2011
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Dec 23, 2010
I am trying to set the value of a hidden field onblur. I add the blur attribute programatically on page load. When the user moves off the control the blur event fires the following javascript.
function getFocus()
{
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[code]...
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Jan 20, 2010
I have to hide the VIEWSTATE and EVENTVALIDATION hidden fields on my ASP.net page at RUN time.I managed to remove the EVENTVALIDATION like so.............
<%@ Page enableEventValidation="false" EnableViewState="false" %>
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Dec 30, 2010
I'm trying to use jQuery to disable an ASP.Net button control and set the flag in a hidden input field. However, the value does not seem to be staying, for some reason. I am new to jQuery, so I'm having a hard time trouble-shooting this:
[Code]....
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Aug 23, 2010
i am trying to set UniqueID for a hidden field control .its throwing me error The 'UniqueID' property is read-only and cannot be set. How to solve this issue ??my code
<asp:HiddenField ID="hSequence" runat="server" UniqueID="hSequence" />
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